Email us to get an instant 20% discount on highly effective K-12 Math & English kwizNET Programs!

#### Online Quiz (WorksheetABCD)

Questions Per Quiz = 2 4 6 8 10

### High School Mathematics - 2 Locus and its Equations

 The path traced by a point moving under a given condition is called its locus. If a point moves according to some fixed rule, its co-ordinates will always satisfy some corresponding algebraic relation and the path(curve) of the moving points is called the locus of the point. The curve must contain all the points satisfying the given condition so that no print outside the curve satisfies the condition. Definition: A set of all points that satisfy a given geometric condition. Method to find the equation of the locus of a moving point: Let (x,y) be ay point on the locus. Properly conceive the given geometrical condition which the above point (x,y) is to satisfy. Express the said condition in an analytical relation in x and y and simplify. The simplified equation so obtained is the equation of the locus. Example: A point moves in a plane so as to remain akways equidistant from two fixed points. A(-4, -4) and B(2,8). Find the equation of the locus. Solution: A(-4,-4) and B(2,8) are the given points. Let P(x,y) be any point on the locus. Using given informations, we getPA = PB PA2 = PB2 (x+4)2 + (y+4)2 = (x-2)2 + (y-8)2 Simplifying the above we get x+2y-3 = 0 This is the required equation of locus. Answer: x+2y-3 Directions: Solve the following questions.

#### Subscription to kwizNET Learning System offers the following benefits:

• Unrestricted access to grade appropriate lessons, quizzes, & printable worksheets
• Instant scoring of online quizzes
• Progress tracking and award certificates to keep your student motivated
• Unlimited practice with auto-generated 'WIZ MATH' quizzes